<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>alert</title>
    <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
    <script src="js/com.wxd.js"></script>
    <link rel="stylesheet" href="style/com.wxd.css"/>
    <style>
        .root {width: 100%; height: 100%; display: flex;overflow: auto;}

        .box { width: 100%; height: 100%; display: flex;overflow: hidden;min-width: 1600px;}

        .box_left { width: 220px; background: lightblue; }

        .box_right { background: lightyellow; overflow: hidden; flex: 1; }
    </style>
    <script>

    </script>
</head>
<body>
<div class="root">
    <div class="box">
        <div class="box_left">3</div>
        <div class="box_right">
            1
        </div>
    </div>
</div>
</body>
</html>